Finding the Fourth Proportional to 21,397,164.89, 29,528,087.55 and 12,230,004.47

Step by Step Solution

1. Step 1: Write the proportion equation
   21,397,164.89 : 29,528,087.55 = 12,230,004.47 : x
2. Step 2: Convert to fraction form
   21,397,164.89/29,528,087.55 = 12,230,004.47/x
3. Step 3: Cross multiply
   21,397,164.89x = 29,528,087.55 × 12,230,004.47
4. Step 4: Simplify right side
   21,397,164.89x = 361,128,642,800,871.56
5. Step 5: Solve for x
   x = 361,128,642,800,871.56/21,397,164.89
6. Step 6: Final answer
   x = 16,877,406.17